Partial-load operation of a gas turbine with an adjustable bypass flow channel

• Main Authors: KERSTIENS THOMAS, KLEINENHAMMANN MATTHIAS, SUSELBECK KAI, WEIDNER FRANK, KNUWER NORBERT, GUTERMUTH MANUEL, TERTILT MARC, ENGLER THORSTEN, WAGNER ULRICH
• Format: Patent
• Language: Chinese; English
• Published: 15.06.2016
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

The invention relates to a gas turbine (100) and suitable operating methods, wherein the gas turbine (100) comprises a compressor (1) for providing compressed air (2), a combustion chamber (4) provided with a burner (3), and an expansion turbine (5), wherein a bypass flow channel (10) is also provided which is designed to supply compressed air (2) past the burner (3) and to supply a hot gas flow (6) generated in the combustion chamber (4) during operation of the gas turbine (100), and wherein in addition the opening cross section (Q) of the bypass flow channel (10) can be adjusted by adjusting means (11), and wherein in addition an adjustment unit (20) is comprised, which is designed to adjust the opening cross section (Q) of the bypass flow channel (10) in such a way that the modification speed of the opening cross section (Q) is selected in such a way that the relative combustion chamber pressure drop (delta BDV) or a material temperature (MT) of the combustion chamber (4) is substantially constant, in part